ratio and proportion Archives - Page 3 of 8

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If x, y, z are in continued proportion, prove that: (x + y)2/ (y + z)2 = x/z.

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exam oriented an important question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication This question has been ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If a, b, c and d are in proportion, prove that: (i) (5a + 7v) (2c – 3d) = (5c + 7d) (2a – 3b) (ii) (ma + nb): b = (mc + nd): d (iii)(a4 + c4): (b4 + d4) = a2c2: b2d2 (iv)(a2+ab) /(c2+cd) =(b2-2ab)/(d2-2cd) (v) (a+c)3 /(b+d) 3=a(a-c) 2/(b(b-d)2 (vi) a2+ab+b2/a2-ab+b2=c2+cd+d2/c2-cd+d2 (vii) (a2+b2) /(c2+d2) =ab+ad-bc/bc+cd-ad) (viii) abcd(1/a2+1/b2+1/c2+1/d2)=a2+b2+b2+c2)

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This is a basic question from ML aggarwal book of class 10th, chapter 7, ratio and proportion., ICSE board If a, ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If ax = by = cz; prove that x²/yz+y²/zx+z²/xy=bc/a²+ca/b²+ab/c²

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exam oriented an important question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication We hve that ax ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If a/b = c/d = e/f prove that: (i) (b2 + d2 + f2) (a2 + c2 + e2) = (ab + cd + ef)2

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This is an important ques from the Book ML Aggarwal class 10th,, chapter – 7, ratio and proportion. It is given ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If x/a = y/b = z/c then prove that (i)x³/a²+ y³/b²+z³/c²=(x+y+z)³/(a+b+c)² (ii) [a²x²+b²y²+c²z²/a³x+b³y+c³z] ³=xyz/abc (iii)(ax-by) /(a+b)(x-y) +(by-cz) /(b+c)(y-z) +(cz-ax) /(c+a) (z-x) =3

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exam oriented an important question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication It is given that ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If a + c = mb and 1/b + 1/d = m/c, prove that a, b, c and d are in proportion.

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exam oriented an important question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication It is given that ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If y is mean proportional between x and z, prove that xyz (x + y + z)3 = (xy + yz + zx)3.

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exam oriented an important question from ML aggarwal, class 10th, chapter 7, ratio and proportion, Avichal publication It is given that ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If b is the mean proportional between a and c, prove that (ab + bc) is the mean proportional between (a2 + b2) and (b2 + c2).

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Question no.13 From ML aggarwal book, class10, chapter 7, ratio and proportion In this ques it is given that if b ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

If b is the mean proportional between a and c, prove that a, c, a2 + b2 and b2 + c2 are proportional.

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This is an important ques from the Book ML Aggarwal class 10th,, chapter – 7, ratio and proportion. It is given ...Read more

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deepaksoniGuru

Asked: March 18, 2021In: ICSE

Find two numbers such that the mean proportional between them is 28 and the third proportional to them is 224.

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This is a basic question from ML aggarwal book of class 10th, chapter 7, ratio and proportion., ICSE board We have ...Read more

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